Implementation Study for In-Place Testing of Asphalt Treated Cold Recycled Pavements

Details

• Creators:
  Iglesias, Pablo Orosa ; Zhang, Cheng ; Santamaria, Daniel ; Haddock, John E.
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  Indiana Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Cold in-place recycling
  • Asphalt pavements
  • Curing agents
  • Modulus of elasticity
  • Quality assurance
  • Construction
  • Mechanistic-empirical pavement design
  • Data collection
  • Cast in place structures
  • asphalt-treated cold recycled pavements
  More +
• Publication/ Report Number:
  FHWA/IN/JTRP-2026/24
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Indiana
• Edition:
  Final Report
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Description:
  This study evaluated the feasibility of rapid in-situ strength test methods for asphalt-treated cold recycled (ATCR) pavements in Indiana, with a secondary objective of characterizing the dynamic modulus of a locally produced ATCR mixture for use as AASHTOWare Pavement ME Design inputs. The long-pin shear test (LPST) and short-pin raveling test (SPRT), developed through National Cooperative Highway Research Program (NCHRP) Project 09-62, were evaluated on a cold in-place recycling (CIR) project on SR 13 in Greenfield, Indiana. Field results for blow counts exceeded the proposed NCHRP threshold moments after compaction, with torque values approaching but not yet reaching the NCHRP criterion. Short-term monitoring during the first hours after compaction showed slight decreasing trends in both blow count and torque, the cause of which could not be confirmed with the available data. By Day 7, both threshold values were exceeded by a wide margin. Dynamic modulus testing of laboratory-compacted specimens yielded a calibrated sigmoidal master curve consistent with the NCHRP Report 863 reference range for CIR materials at intermediate temperatures. The results support the potential adoption of the LPST and SPRT as complementary indicators of curing readiness in Indiana, pending validation across additional field projects.
• Format:
  PDF
• Funding:
  SPR-4822
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93542/dot_93542_DS1.pdf
• File Type:
  [PDF - 7.94 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:46b5e6f03b92ee34a2d93e773d7cdef629afe58bd0efa618361320eb588e62f4eaf9df5135f754eb65119cc6faa4f402b621ce4440e1f9ff6a4cc1c6dd860796